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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 946 · 40 questions
TalentJR

The trick (Split and double): Split the number into tens and ones: 37 = 30 + 7. Double each part (30 → 60, 7 → 14) — or halve each part. Add the two answers: 60 + 14 = 74.

NameDateTime takenScore ___ / 40
  1. 1.Half of 24 =
  2. 2.Double 21 =
  3. 3.Double 12 =
  4. 4.Double 65 =
  5. 5.Double 66 =
  6. 6.Double 24 =
  7. 7.Half of 132 =
  8. 8.Half of 68 =
  9. 9.Half of 72 =
  10. 10.Half of 182 =
  11. 11.Half of 28 =
  12. 12.Half of 106 =
  13. 13.Half of 82 =
  14. 14.Double 92 =
  15. 15.Double 26 =
  16. 16.Half of 192 =
  17. 17.Double 13 =
  18. 18.Double 72 =
  19. 19.Double 52 =
  20. 20.Half of 46 =
  21. 21.Half of 14 =
  22. 22.Double 34 =
  23. 23.Double 91 =
  24. 24.Half of 92 =
  25. 25.Double 63 =
  26. 26.Double 61 =
  27. 27.Half of 62 =
  28. 28.Double 67 =
  29. 29.Half of 164 =
  30. 30.Double 93 =
  31. 31.Double 29 =
  32. 32.Half of 196 =
  33. 33.Half of 168 =
  34. 34.Half of 18 =
  35. 35.Double 94 =
  36. 36.Double 96 =
  37. 37.Half of 12 =
  38. 38.Double 16 =
  39. 39.Half of 66 =
  40. 40.Half of 56 =

Answer key

  1. 12
  2. 42
  3. 24
  4. 130
  5. 132
  6. 48
  7. 66
  8. 34
  9. 36
  10. 91
  11. 14
  12. 53
  13. 41
  14. 184
  15. 52
  16. 96
  17. 26
  18. 144
  19. 104
  20. 23
  21. 7
  22. 68
  23. 182
  24. 46
  25. 126
  26. 122
  27. 31
  28. 134
  29. 82
  30. 186
  31. 58
  32. 98
  33. 84
  34. 9
  35. 188
  36. 192
  37. 6
  38. 32
  39. 33
  40. 28

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